Manual for Creating and Using Plaster Molds
Manual for the Creation and Use of Plaster Molds
A complete manual for designing, creating, and using plaster molds with professional techniques and precise results.
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📖 Total pages: 140
Table of Contents 🎯
(Molds · Slip · Silicone · Problems · Projects)
1. Introduction to Molds in Ceramics
- Why use molds in ceramics?
- Advantages and applications
- Types of molds by use
- Parting line, keys, and undercuts
- 6-step workflow
- Decision map: one, two, or multiple parts
2. Essential Materials and Tools
- Ceramic plaster: types and characteristics
- Tools for modeling and casting
- Precautions when working with molds
- Plaster comparison (Plaster of Paris, Alpha, Dental)
- Water/plaster ratio table and setting tips
- Additives: fibers, PVA, resins
- Release agents and sealers
- Safety and handling of silica dust
3. One and Two-Part Molds
- Simple one-piece molds
- Step-by-step for two-part molds
- Common errors and solutions
- Segmented molds (3+ pieces)
- Planning parting lines
- Solving overhangs and undercuts
- Centering and alignment tools
4. Stoneware and Porcelain Molds
- Key differences in reproduction
- Adjustments in drying and demolding times
- Shrinkage table by clay body
- Mold absorption test
- Controlled drying strategies
5. Reproducing Pieces with Slip
- Preparation of the ideal slip
- Casting process in molds
- Resting and drying times
- Use of deflocculants: dosage and errors
- Density and viscosity (homemade methods)
- Thickness vs. time curves
- Recycling and pH control
6. Flexible and Alternative Molds
- Using silicone for reusable molds
- Techniques with unconventional materials
- Shore hardness selection
- Silicone mold with rigid mother mold
- Addition vs. condensation silicone
- Vacuum degassing
7. Mold Care and Maintenance
- Cleaning and storage
- Repairs and touch-ups
- Natural and kiln drying cycles
- Edge regeneration
- Mold and odor prevention
- Service life recording
8. Common Errors and Troubleshooting
- Deformed pieces
